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Training plan Triathlon Half Ironman Intermediate 16 Weeks

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Who is this L Triathlon training program for?

This plan is for intermediate triathletes, already initiated to the triple effort or regularly practicing one or two of the disciplines. It is for triathletes who wish to progress in L Triathlon distances with a structured, balanced, and performance-oriented plan with an average weekly volume of 5.3h. This program will allow you to consolidate your fundamentals, optimize your training time, and better manage your transitions.

Why follow this l triathlon training plan?

A l triathlon requires specific preparation if you want to perform. This plan will allow you to:

  • Structure your training by respecting the principles of progressiveness, intensity variation, and active recovery.
  • Develop your qualities of resistance, speed, and ability to link disciplines without loss of efficiency.
  • Strengthen your transitions (especially bike-run), which are often decisive.
  • Integrate nutritional and mental preparation to approach the race with serenity.
It includes:
  • swimming sessions focused on technique, endurance, and open water adaptation,
  • cycling sessions (road or home trainer) working on threshold, PMA, and cadence,
  • running workouts (VMA, fartlek, endurance),
  • brick sessions (bike + run) to optimize your transitions.
  • GPP sessions to work on your muscular strength.
  • Mental preparation sessions to optimize your potential.
  • double training days from the intermediate level
  • active rest: 1 to 3 days / week
This plan is also suitable for those looking for a good compromise between training load and professional/personal life.

Phases of the training program

A good triathlon training plan is based on structured progression. This l triathlon program is divided into three key phases, each with a specific objective and adapted content.
This allows for effective development of the necessary physical qualities, while optimizing recovery and final performance.


1. General strengthening phase (weeks 1 to 2)

This introductory phase aims to lay the foundations of the plan. The goal is to consolidate physiological basics while working on technique.

  • Objective: improve fundamental endurance and strengthen the body.
  • Content:
    • Easy runs,
    • Technical work in swimming,
    • Cadence drills on the bike,
    • General physical preparation (GPP) type muscle strengthening sessions.


    2. Specific development phase (weeks 3 to 14)

    This is the core of the program, where we seek to develop the specific qualities necessary for performance on race day.

    • Objective: raise physiological capacities (VO2max, threshold, running economy).
    • Content:
      • Intensive bike sessions: e.g., 3x10' at 85-90% of FTP,
      • Swimming sets at a specific pace (200 to 400 m),
      • Running: short VMA, tempo runs, or threshold pace,
      • Bike-run brick sessions to get the body used to the transition.
    • Weekly volume: on average 5.3h/week.


    3. Tapering phase (weeks 15 and 16)

    The last few weeks are dedicated to active recovery and performance optimization.

    • Objective: reduce the training load to allow the body to assimilate the work done.
    • Content:
      • Progressive decrease in volume,
      • Maintaining a light dose of intensity to keep good sensations,
      • Partial or shortened race simulation (without creating fatigue).


    This three-stage structure is used by the best coaches to maximize gains while avoiding overtraining. It allows you to arrive fresh, confident, and ready to give your best on race day.

    Weekly content and key tips

    Example of a typical week:
    • Swimming: 1 to 2 sessions – technique, endurance, strength, threshold...
    • Cycling / Home Trainer: 1 to 2 sessions – fundamental endurance, PMA, strength, velocity...
    • Running: 2 sessions – fundamental endurance, VMA, threshold...
    • Brick session: every 4 weeks from week 6
    • GPP / core training: 1 session on specific weeks
    • Mental preparation: 1 session on specific weeks
    • Double training days from the intermediate level
    • Active rest: 1 to 3 days / week

    Key tips:
    • Hydrate yourself during all sessions > 1h.
    • Plan for a carbohydrate intake 1h before intense sessions.
    • Alternate terrains (road, trails) to limit injuries.
    • Visualize transitions and repeat your automatisms in real conditions.
    • Go to bed at a fixed time: sleep is your primary recovery tool.

Weekly evolution of the training load and duration in the L Triathlon training plan

This graph illustrates the weekly distribution of the training load (according to the Edwards TRIMP method) and the total training duration (in minutes) over the entire plan. It highlights the gradual progression of loads, the overload and recovery phases, as well as the distribution of training volume over the different weeks. This visualization allows for tracking the evolution of the external load and ensuring compliance with the principles of progressiveness and periodization.

WEEK 1 (~ 3.5h)
49min 34min 1h01 50min Training load : 398
Monday

REST

Active rest, Balanced nutrition, Hydration, Restorative sleep, Mental relaxation, Recovery, Visualization
Tuesday

Strength & Conditioning – 50 mn

Warm-up (10 min)
  • Hip rotations, light leg swings, cat-cow pose.
Session (35 min)
  • Side Plank with leg lift: 3 sets of 10-12 repetitions per side.
  • Bird-Dog: 3 sets of 12-15 repetitions per side (slow and controlled).
  • Clamshells with resistance band: 3 sets of 15-20 repetitions per side.
  • Dead Bug: 3 sets of 10-12 repetitions per side (very slow and controlled).
  • Side Walk with mini band (around ankles or knees): 3 sets of 15-20 steps on each side.

Take 60 seconds of rest between each set.

Cool-down (5 min)
  • Gentle stretching of hip flexors and obliques.
Wednesday

Running – 49 mn

V02 Max
Warm-up: 10 min in Z2

Session:
19 x 30 s in Z5, R = 1 min

Cool-down: 10 min in Z1
Thursday

REST

Active rest, Balanced nutrition, Hydration, Restorative sleep, Mental relaxation, Recovery, Visualization
Friday

Swimming – 1800 m

Specific Pace
Warm-up: 400m in Z2 Swim of choice

Session:
2 x 150m in Z3, R = 15s NC
3 x 100m in Z4, R = 15s NC (50 fast / 50 smooth)
300m in Z4 PB PQ
3 x 100m in Z4, R = 15s PQ

Cool-down: 200m in Z1 4 strokes
Saturday

Cycling – 61 mn

Fartlek
Warm-up: 10 mins in Z2

Session:
30 x 24 s in Z5 (150% PMA), R = 1 min

Cool-down: 10 mins in Z1
Sunday

REST

Active rest, Balanced nutrition, Hydration, Restorative sleep, Mental relaxation, Recovery, Visualization
WEEK 2 (~ 3.5h)
49min 30min 37min 1h15 Training load : 380
Monday

REST

Active rest, Balanced nutrition, Hydration, Restorative sleep, Mental relaxation, Recovery, Visualization
Tuesday

Strength & Conditioning – 75 mn

Warm-up (15 min)
  • Full body mobilizations.
  • Light jumps, bodyweight squats, light Burpees.
Session (50 min)
  • Strength-Power Circuit (3-4 rounds, minimal rest between exercises, 2-3 min between rounds):
    • Squat Jump (explosive): 10-12 repetitions.
    • Explosive Push-ups (with or without clap): 10-12 repetitions.
    • Jumping Lunges (Split Jumps): 8-10 repetitions per leg.
    • Kettlebell Swings (explosive): 8-10 repetitions.
    • Plank with alternating shoulder touch: 45-60 seconds.
    • Burpees (fast and complete): 8-10 repetitions.

The goal is to maintain a very high pace with good form. Minimal rest between exercises.

Cool-down (10 min)
  • Light dynamic and static stretching.
Wednesday

Running – 49 mn

V02 Max
Warm-up: 10 min in Z2

Session:
19 x 30 s in Z5, R = 1 min

Cool-down: 10 min in Z1
Thursday

REST

Active rest, Balanced nutrition, Hydration, Restorative sleep, Mental relaxation, Recovery, Visualization
Friday

Swimming – 1700 m

MAP (PMA)
Warm-up: 400m in Z2 Swim of choice

Session:
100m in Z3 NL
300m in Z3 3 strokes of choice
4 x 50m in Z5 25 fast / 25 recovery
100m in Z2 easy
4 x 100m in Z5, R = 15s NC fast

Cool-down: 200m in Z1 Swim of choice
Saturday

Cycling – 37 mn

Fartlek
Warm-up: 15 min in Z2

Session:
10 x 18 s in Z5 (150% FTP), R = 1 min

Cool-down: 10 min in Z1
Sunday

REST

Active rest, Balanced nutrition, Hydration, Restorative sleep, Mental relaxation, Recovery, Visualization
+ 14 weeks...

Global Statistics

Type No. of sessions Duration Calories Load
Running 22 (18.3%) 23 h (27.1%) 14 752 (30.6%) 2 879,5 (27%)
Swimming 19 (15.8%) 14.2 h (16.7%) 8 548 (17.7%) 2 362,8 (22.2%)
Cycling 21 (17.5%) 26.7 h (31.5%) 14 836 (30.8%) 3 250,0 (30.5%)
Brick Session 3 (2.5%) 3.5 h (4.1%) 2 200 (4.6%) 425,0 (4%)
Indoor Cycling 9 (7.5%) 9.9 h (11.6%) 5 286 (11%) 1 137,0 (10.7%)
Strength & Conditioning 5 (4.2%) 5.6 h (6.6%) 2 580 (5.4%) 603,0 (5.7%)
REST 37 (30.8%) 0 h (0%) 0 (0%) 0,0 (0%)
Mental Training 4 (3.3%) 2 h (2.4%) 0 (0%) 0,0 (0%)
Total 120 84.9 h 48 202 10 657,3

Distribution of sessions

Time spent per heart rate zone

Zone Duration %
Z1 21 h 7 min 25.3%
Z2 45 h 36 min 54.7%
Z3 4 h 32 min 5.4%
Z4 8 h 15 min 9.9%
Z5 3 h 53 min 4.7%
Total 83 h 25 min 100%

A Few Tips Before Starting Your Triathlon Training Program

Since the very beginning, our mission at AthleteSide has been to help you progress. This means we focus on education, not just conditioning. Our triathlon training plans include detailed instructions for swimming, cycling, and running.
Whatever the distance, each triathlon training plan comes with an explanation of technical terms, a weekly breakdown, and useful tips and guidance. An effective triathlon training program is also built around you, your goals, and your races. We divide the triathlon plans according to the distance and training volume to get the plan that suits you best.

This training program has been developed in collaboration with certified triathlon coaches. It is designed so that each session is easy to understand and follow.

We have attached particular importance to the quantification of the training load using the TRIMP. It allows for objective tracking of the intensity and volume of sessions, in order to optimize progress without risking overtraining. It helps balance periods of intense work and recovery, which are essential in triathlon.

Before starting this triathlon training plan, a medical consultation is recommended to evaluate physical condition and detect any contraindications. A cardiovascular check-up with an ECG and, if necessary, a stress test may be required.

This program is flexible and can be adapted to your schedule. You can adjust the sessions and days according to your availability, while avoiding scheduling several consecutive intense sessions.

Consistency is essential for progress. Try to be as constant as possible, as results are not seen in a week, but the improvement over 12 to 20 weeks can be considerable.

Happy training to all!

Reminder on Training Intensities – ESIE Scale

The intensity of a session is based on:

  • Heart rate (HR)
  • Power
  • Subjective feeling

Ideally, zones are determined via a stress test in a sports medicine laboratory.

Failing that, you can estimate the Maximum Heart Rate (MHR) as follows:

  • Male: MHR = 220 – age
  • Female: MHR = 226 – age

Intensity Zones (Z1 to Z7)

Zone Feelings %MHR %MAP Duration Effects Keywords
Z7 Muscle tingling after effort. Conversation impossible. —180–3004" to 10" Max strength, biomechanics Explosiveness
Z6 Extreme suffering. Hyperventilation. Conversation impossible. —100–18030" to 1' Lactate tolerance Resistance
Z5 Rapid ventilation. Very difficult conversation. 95–10080–1003' to 7' High lactate threshold VO2max, over-revving
Z4 Increasing ventilation. Difficult conversation. 90–9575–8020' to 1h Threshold work TT, hills
Z3 High but stable ventilation. Conversation possible. 85–9065–751h to 2h Maintaining race pace Tempo
Z2 Feeling of ease. Easy conversation. 75–8550–65< 5h Fundamental endurance, lipolysis Active recovery
Z1 Very easy. Relaxation. Very easy conversation. < 7540–50> 5h Regeneration, relaxation Roll out

Tips for Swimming Sessions

Swimming training in a triathlon plan follows specific principles to prepare an athlete for both the swimming part of the competition and the transition to the other triathlon disciplines (cycling and running).

1. Swimming-specific objectives in triathlon

  • Endurance: Swimming should be approached from an endurance perspective, as the distance in a triathlon can be long. The goal is to maintain a moderate intensity throughout the event.
  • Technique: Good technique is crucial to save energy and swim efficiently.
  • Open water adaptation: In triathlon, swimming is done in open water, which introduces variable conditions (waves, current, reduced visibility).

2. Training planning

  • Progressive volume: It is recommended to swim 2 to 3 times per week, with sessions of 45 to 90 minutes.
  • Vary training types: Endurance sessions, technique sessions, intervals, and open water training.

3. Triathlon specificity

  • Transitions: Prepare your water exit efficiently to avoid losing time.
  • Swim-bike brick sessions: Combined sessions to get your body used to this transition.

Swimming Technical Terms

  • WU: Warm-up
  • PB: Pull Buoy
  • Paddles: Paddles
  • FS: Full Swim
  • FR: Freestyle (Crawl)
  • Drills: Drills

Tips for Running Sessions

In a triathlon training plan, running is an essential component of preparation. It requires a specific approach to optimize performance while taking into account the other aspects of triathlon.

1. Progression and accumulation

Running training must follow a logical progression, allowing for gradual volume accumulation to avoid overtraining while building endurance.

2. Vary the intensities

  • Fundamental endurance (FE): Long, low-intensity sessions to develop aerobic capacity.
  • Threshold: Running at 80-90% of MHR to improve lactate tolerance.
  • Speed and intervals: To improve the ability to run faster.

3. Simulate race conditions

Include long runs while simulating specific race conditions, such as linking cycling and running.

Technical Terms

  • R1': 1-minute recovery
  • MHR: Maximum Heart Rate
  • GPP: General Physical Preparation

Tips for Cycling Sessions

Training well in cycling as part of a triathlon training plan is essential, as cycling represents a significant part of the competition.

1. Setting objectives

  • Improve endurance to sustain long distances with moderate intensity.
  • Increase power for hilly courses.
  • Optimize efficiency to better manage your speed while minimizing fatigue.

2. Types of training

  • Long endurance sessions: 1 to 2 times per week, 2 to 4 hours at moderate intensity.
  • Intervals: Once a week, short and intense efforts.
  • Threshold or tempo: Once a week, at 80-90% of MHR.
  • Hills: To strengthen muscles and improve climbing efficiency.

Technical Terms

  • RPM: Revolutions per minute
  • WATT: Power measurement
  • FTP: Average maximum power over 1 hour

Tips for Home Trainer Sessions

Integrating Home Trainer sessions into a triathlon training plan offers several significant advantages.

Home Trainer Advantages

  • Optimal control: Precise power measurements, targeted sessions.
  • Safety: No risks related to outdoor conditions.
  • Time saving: Immediate availability, no weather constraints.
  • Specific simulations: Interval work and transition preparation.

Recommended platforms

Zwift, TrainerRoad, or Sufferfest offer interactive training programs with real-time performance data.

Tips for GPP Sessions

General Physical Preparation (GPP) is often neglected in triathlon, yet it is a key lever for progress and injury prevention.

GPP Advantages

  • Injury prevention: Strengthen stabilizing and postural muscles.
  • Improved movement economy: Better muscle tone for more efficiency.
  • Performance optimization: More strength = more power.

Types of sessions adapted to triathlon

  • Lower body: Squats, lunges, step-ups.
  • Core: Ventral/dorsal/lateral planking.
  • Upper body: Pull-ups, push-ups, resistance band rows.

Tips for Rest Days

Having one or more rest days per week in a triathlon training plan is important for several reasons.

Why rest is essential

  • Muscle recovery: The body repairs muscle micro-tears during rest.
  • Overtraining prevention: Avoid chronic fatigue and injuries.
  • Nervous system regeneration: The central nervous system needs time to recover.
  • Performance improvement: Physiological adaptations occur during recovery.

Optimize your rest day

  • Balanced nutrition: Proteins, complex carbohydrates, healthy fats.
  • Hydration: Drink enough water.
  • Sleep: 7 to 9 hours per night.
  • Active recovery: Light walking, stretching, yoga.

Tips for Days with 2 Training Sessions

In a multi-week triathlon training plan, organizing a day with two training sessions must be well thought out.

Key principles

  • Respect the objective of each session: Morning = endurance/technique, Evening = specific intensity.
  • Adapt intensities: Avoid two high-intensity sessions on the same day.
  • 6 to 8 hour break between the two sessions to allow the body to recover.

Nutrition

  • Breakfast: Carbohydrates + moderate proteins.
  • Post-morning snack: Protein + carbohydrate snack.
  • Lunch: Complete and balanced meal.
  • Before evening session: Carbohydrates + small amount of protein.

Post Triathlon Competition Recovery

Recovery after a triathlon competition is crucial to allow your body to repair and prevent injuries.

Immediate recovery (first hours)

  • Active cool-down: A few minutes of light walking.
  • Hydration: Water, electrolytes, or recovery drink.
  • Nutrition: Carbohydrates and proteins within 30-60 minutes (3:1 ratio).

Following days

  • Active rest: Light swimming, yoga, low-intensity bike rides.
  • Massage or foam rolling: To reduce muscle tension.
  • Quality sleep: 7 to 9 hours per night.

Following week

Gradual return to training without jumping into intense sessions. Listen to your body.

Our Happy Customers

See what customers are saying about us.


This simple and effective training program allowed me to finish my first Sprint Triathlon! Thanks to the whole AthleteSide team

Andreas

Beginner Triathlete
Thank you for this training plan that I adapted a little to my schedule and which helped me achieve my goal.

Lucie Anne

Confirmed Triathlete
I recommend the Beginner M Triathlon training plan over 16 weeks, perfect for preparing for the Deauville Triathlon!

David Pauloux

Beginner Triathlete